Saw-oiling device



May 6, 1924. 1,492,729

W. H. JOHNSON SAW OILINQDEVICE Filed April 13, 1923 Patented May 6, 1924.

WILLIAM H. JOHNSON, 0F HAYS, KANSAS.

SAW-OILING DEVICE.

Application filed April 13, 1923. Serial No. 631.869.

To all whom t may concern:

Be it known that I, VILLIAM I-I. JOHN- soN, a citizen of the United States, residing at Hays, in the county of Ellis and State of Kansas, have invented certain new and useful Improvements in Saw-Oiling Devices, of which the following is a specification.

In carrying out the present invention, it is my purpose to provide a highly improved form of saw oiling device, and one that may be readily applied to and removed from the saw for cleaning or repairing, the invention being characterized by its simplicity, durability and eliiciency, and of such a nature as to be manufactured and marketed at al relatively small cost.

A further purpose of this invention resides in the provision of such an oil device for saws, wherein the flow of oil in the oil carrying receptacle to the cutting edge of the saw is at all times under direct control of the operator for permitting of the desired amount of 'oil to the saw cutting edge.

The nature and advantages of theinvention will be better understood when the following detailed description is read in connection with the accompanying drawings, the invention residing in the construction, combination, and arrangement of parts as claimed.

In the drawings forming part of this application, like numerals of reference indicate similar parts in the several views, and wherein Figure l is a fragmentary side elevation of a conventional type wood saw equipped with my improved device.

Figure 2 is a detailvertical cross section thereof, and

Figure 3 is a. transverse cross section, taken substantially upon the line 3--3 of4 Figure l.

lVith particular reference to the drawings. 5 indicates the saw blade. and 6 the handle thereof, the blade 5 being provided adjacent its rear end with a rearwardly and upwardly extending slot` 7, the sides of the handle 6 coextensive with this slot being cut away for purposes presently to be described. The front end of the slot 7 is provided with an arcuate shaped knife edge 8. Upon opposite sides ofthe blade 5 are oil grooves 9, terminating at one end at the central portion of said knife edge 8 of the slot 7, these oil grooves extending forwardly and downwardly, and terminating at their opposite ends, and at the cutting edge of the saw, and preferably adjacent the front end thereof. Within the slot 7 of the saw blade 5, and within the cut out portion of the handle 6 is an oil cylinder 10, the same being maintained in this position through the medium of relatively wide metallic strap members 11, that are positioned upon opposite sides thereof, and are secured through the medium of screws or .the like 12 to the portions of said handle 6. The opposite ends of the cylinder 10 are screw threaded, and upon the lower screw threaded end thereof is a bulbous-shaped cap 13, formed with an outlet nipple 14, closely adjacent the said knife edge 8 of the slot 7, and the ends of said oil grooves 9. The said outlet nipple 14C is provided internally with a valve seat 15, for receiving the end of a valve rod 16 within said cylinder 10, when the same is depressed. This valve rod 16 extends outwardly through a central opening in a cap 17 upon the opposite upper screw threaded end of said cylinder, and is pivotally connected at 18 to a thumb lever 19, the same being fulcrumed at 20 to an arm 2l, formed upon said cap 17.

Surrounding the valve rod 16 within the cylinder 10, and between an abutment 22 thereon and the inner face of said end cap 17 is an expansion spring 23, the same adapted for normally forcing said rod 16 downwardly, and consequently preventing .the discharge of oil from said cylinder 10.

The said end cap 17 is provided with an oil inlet opening 24, normally closed by a cap 25, and in view of the above description, it will at once be apparent that when vthe thumb lever 19 is depressed, the rod 16 will be raised for consequently permitting the flow of oil from the cylinder 10 to the grooves 9 upon opposite sides of the blade 5.

In view of the foregoing, it is believed by me that the advantages of an oiler of this type will be readily appreciated by those skilled in the art, and although I have shown and described the preferred embodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein, without departing from the spirit and scope of the invention as claimed.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. A saw blade provided at its upper corner portion with a diagonally disposed slot having an arcuate inner end defining a knife edge, a groove provided in the side of the blade and connecting with the arcuate end of the slot at a point midway between the ends of the are, said groove being disposed along the blade and spaced from the' teem 1U Ward the end of the groove which communi- Cates with the slot at the point niidway between the arcuate inner edge of the slot.

2. ln combination with a saw blade provided with a slot having a knife edge and an oil groove leading froln the slot, an oil 1' channel straddling said edge opposite said grooves and means for delivering oil into Said oil Channel.

In testimony whereof I affix my signature.

TILLIAM H. JOHNSON. 

